SMBJ9.0CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ9.0CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient protection. This component features a 9V reverse standoff voltage with a 15.4V maximum clamping voltage and 39A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

SMBJ9.0CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 889SMBJ9.0CAHM3_A/I Datasheet

Current PartRFQ

SMBJ9.0CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 866SMBJ9.0CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ9.0CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 9V
• Voltage - Breakdown (Min): 10V
• Voltage - Clamping (Max) @ Ipp: 15.4V
• Current - Peak Pulse (10/1000µs): 39A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ9.0CAHM3_B/I is identified as the manufacturer-recommended substitute, maintaining identical electrical specifications and mechanical compatibility while offering active product status.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ9.0CAHM3_B/I is the direct equivalent for the obsolete SMBJ9.0CAHM3_A/I. Both components are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical and mechanical specifications. The substitute part carries active product status, ensuring continued availability and supply chain support. Both parts meet automotive-grade requirements with AEC-Q101 qualification and maintain full compliance with ROHS3 and REACH regulations. The transition from the obsolete to the active variant presents no functional or compatibility constraints for telecom transient protection applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ9.0CAHM3_B/I be used as a direct replacement for SMBJ9.0CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical, with matching voltage ratings (9V reverse standoff, 15.4V clamping), current specifications (39A peak pulse), power dissipation (600W), and package configuration (DO-214AA, SMB). The substitute is the active production equivalent.

Q: What is the significance of the product status change from Obsolete to Active?

A: The obsolete status of SMBJ9.0CAHM3_A/I indicates discontinued production. The active status of SMBJ9.0CAHM3_B/I confirms ongoing manufacturing and supply availability, making it the appropriate choice for new designs and component replenishment.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both parts maintain identical automotive-grade classification, AEC-Q101 qualification, ROHS3 compliance, and REACH unaffected status. Regulatory and quality requirements are fully equivalent.

Q: Does the DO-214AA (SMB) package remain the same for both parts?

A: Yes. Both the main part and substitute use the identical DO-214AA surface mount package, ensuring PCB layout and assembly compatibility without modification.

Q: What are the critical parameters that define substitution eligibility for this TVS diode?

A: Substitution is determined by matching voltage ratings (reverse standoff, breakdown, and clamping), peak pulse current, power dissipation, package type, temperature range, and automotive qualification. All these parameters are identical between SMBJ9.0CAHM3_A/I and SMBJ9.0CAHM3_B/I.